# Copyright Dechin CHEN 2025

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


import matplotlib.pyplot as plt
import numpy as np


def plot_1d(cv, lower, upper, path, title=None, y=1):
    y *= np.ones_like(cv)
    plt.figure()
    if title is not None:
        plt.title(title)
    plt.xlim(lower, upper)
    plt.plot(cv, y, 'o', color='black')
    plt.savefig(path)
